Get rid of dissolved gasses with our DEGASi-line Degassing explained The critical component of the vacuum degasser is a short length of Systec AF™ tubing through which the solvent flows. This tubing is located in a chamber where a partial vacuum is maintained by a vacuum pump that is constantly running at a low speed. Dissolved gasses migrate across the tubing wall under a concentration gradient produced by the vacuum as the solvent flows within the tubing in accordance with Henry’s law. The gasses are expelled from the system and the chamber is maintained at a constant, preset vacuum level by varying the vacuum
ZHCR® Vacuum Pump
THE PRINCIPLE OF OUR DEGASi-LINE Dissolved gasses are actively removed from a flowing liquid stream by vacuum via the Systec AF™ membrane.
pump speed as needed. A special port in the vacuum pump continually flushes the pump head with a small “bleed” of air to remove any solvent vapors which may enter the pump from the vacuum chamber. This air bleed eliminates the need for any solenoid valves within the system. This patented design results in zero vacuum “hysteresis”. It is not necessary to totally eliminate the dissolved gas, it only needs to be reduced to a concentration that is below the saturation point of the mixture. Typically, ~50% must be removed.
Vacuum Controller
DEGASSING CHAMBER Systec AF™ Injector / Auto Sampler Dissolved gas
Eluent
Fluidic Pump